net/bridge/br_private_stp.h

   1 /*
   2  *      Linux ethernet bridge
   3  *
   4  *      Authors:
   5  *      Lennert Buytenhek               <buytenh@gnu.org>
   6  *
   7  *      $Id: br_private_stp.h,v 1.2 2000/10/30 22:03:20 davem Exp $
   8  *
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License
  11  *      as published by the Free Software Foundation; either version
  12  *      2 of the License, or (at your option) any later version.
  13  */
  14
  15 #ifndef _BR_PRIVATE_STP_H
  16 #define _BR_PRIVATE_STP_H
  17
  18 #define BPDU_TYPE_CONFIG 0
  19 #define BPDU_TYPE_TCN 0x80
  20
  21 struct br_config_bpdu
  22 {
  23         unsigned        topology_change:1;
  24         unsigned        topology_change_ack:1;
  25         bridge_id       root;
  26         int             root_path_cost;
  27         bridge_id       bridge_id;
  28         port_id         port_id;
  29         int             message_age;
  30         int             max_age;
  31         int             hello_time;
  32         int             forward_delay;
  33 };
  34
  35 /* br_stp.c */
  36 void br_become_root_bridge(struct net_bridge *br);
  37 void br_config_bpdu_generation(struct net_bridge *);
  38 void br_configuration_update(struct net_bridge *);
  39 int  br_is_designated_port(struct net_bridge_port *p);
  40 int  br_is_root_bridge(struct net_bridge *br);
  41 void br_port_state_selection(struct net_bridge *);
  42 void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu);
  43 void br_received_tcn_bpdu(struct net_bridge_port *p);
  44 void br_tick(unsigned long __data);
  45 void br_transmit_config(struct net_bridge_port *p);
  46 void br_transmit_tcn(struct net_bridge *br);
  47 void br_topology_change_detection(struct net_bridge *br);
  48
  49 /* br_stp_bpdu.c */
  50 void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
  51 void br_send_tcn_bpdu(struct net_bridge_port *);
  52
  53 #endif